Cooling vessel for preserving food products and the like



y 4, 5- H. H. M. VAN SWIJNDREGT ET AL 2,047,299

COOLING VESSEL FOR PRESERVING FOOD PRODUCTS AND THE LIKE Filed Oct. 20,1954 Myj . I xx 151111 llusskrus Remark/4017741 54 uw .slmvmmr.

4ND Gem/1' Jam/was DE ARI/WV PER:

Arm/Mex Patented July 14, 1936 UNITED STATES COOLING VESSEL FOR,PRESERVING FOO PRODUCTS AND THE LIKE Hubertus Hendrik Montauban van- Swiindregt and Gerrit Johannes dc Bruyn, The Hague,

Netherlands Application October 20, 1934, Serial No. 749,232 In Belgiumand France September 26, 1934 2 Claims. (01. 62-91) The presentinvention relates to a vat, casing or vessel made of porous earthenwareor the like, in which capillary penetration and natural evaporation pf afluid produces a decrease of temperature within the container.

Apparatus constructed according to the aforesaid principle are known andthey are generally constituted by means of porous plates which aremounted within metal frames of large dimensions,

whereas the lower 'ends of said frames are immersed in a water filledchannel or trough. Such apparatus presents the drawback that only-aportion of the useful wall surface remains free and impregnating aporous body, with that characteristic that the apparatus is formed witha separate cylindrical or polygonal body made of porous earthenware orlike absorbing material, the outer wall thereofbeing provided with ribsor other unevennesses for increasing the surface of evaporation, whereasthe lower end of said jacket or completely closed by the aforesaid body.

According to a preferred form of construction,

the cooling vessel or vat will be formed as a cylinder and the outerwall will have annular projections or ribs so 'as to increase theevaporation surface to a maximum and obtain an increased cooling effect.

The vessel is provided at the bottom portion with a flange, by means ofwhich the body rests upon the rim of a metal water basin with inter-,

taining cup is completely closed.

The opening givingaccessto the cooling vessel may be closed by means ofan insulating cover.

that evaporation is only possible at such places,

body is immersed within a water basin which is.

position of a rubber ring, so that the water contacle having a plainbottom is introduced into the vessel and provided eventually with a cockwhen the apparatus is intended for preserving and cooling liquids.

By way of example, a practical form of embodiment will be describedhereafter with reference to the accompanying drawing.

Fig. 1 is 'a vertical axial section of the cooling vessel according tothe invention and taken on line I-I of Fig. 2;

Fig.2 is a horizontal section on line IIII of Fig. 1;

'Figs. 3 and 4 illustrate in perspective views a metal supporting framefor the goods and a metal container fitting within the cooling body. ofthe apparatus.

Withreference to the drawing, the cooling vessel according to theinvention will be formed by means of a cylindrical vat I, made of porousearthenware and of which the outer wall surface is increased by multipleribs 2. The evaporating surface and consequently the cooling efiect willbe accordingly increased.

The lower edge 3 of the porous body is permanently in contact with thereserve of water 4,

' which has been poured in the cup-shaped basin 5 and which may besubsequently filled through the inlet tube end 6 provided with aconvenient closure, in order to compensate the losses throughevaporation and impregnation.

The device is characterized by the fact that the casing 5 is providedwith a flange I supporting a rubber ring 8' to be engaged by the body ofthe vessel I, so that a perfect closure of the water reserve 4 issecured.

The upper opening of the body I gives passage to the inner useful space9 and may be closed by means of an insulating cover II). I Anotherfeature of the invention consists in the inner arrangement of thecooling vessel. Use is made therefor of a metal frame I I-, having gridsI2 adjustable in height and a plate I3, which can slide exactly in themetal inner fitting I4 illustrated in Fig. 4. This metal fitting I4 isprovided inside with guide strips I5 engaging notches I6 of the plateI3.

The frame II can be lifted from the cooling vessel and by slight partialrotation be held'out of thebody I, while supported by the aforesaidguide strips 'I5.

Obviously, the invention is not restricted to the particularconstruction described, but such apparatus may also be constructed inpolygonal shape and of any porous material, such as earthenware, textilefibres and the like, whereas-the, outer wall may present any type:ofunevennesses or projections which are brought in contact with thewater reserve in any convenient manner.

We claim:

1. A cooling vessel comprising a tubular body of porous material havinga smooth inner wall and circular corrugations outside, an insulatedcover for the'upper opening of the tubular body. a plain bottom portionhaving a downwardly extending flange, a separate water basin supportingthe tubular body, said flange extending downwards in the water containedin the basin, and a rubber ring interposed between said bottom portionand the upper edge of the basin at the outside of the flange.

2. A cooling vessel comprising a tubular body 01' porous material havinga smooth inner wall and circular corrugations outside, an insulatedcover for the upper opening of the tubular body, a plain bottom portionhaving a downwardly extending flange, a, separate water basin supportingthe tubular body, said flange extending downwards in the water containedin the basin, a. rubber ring interposed between said bottom portion andthe upper edge of the basin at the outside of the flange, and a metalcylindrical container fitting inside the body.

HUBERTUS HENDRIK MONTAUBAN VAN SWIJNDREGT. GERRIT JOHANNES DE BRUYN.

